Pulverizer.



O. CHRISTIANSON.

PULVERIZER.

APPLICATION FILED JAN. 29, 1912.

Lg jQglzi Patented Aug. 12, 1913.

2 SHEETS-SHEET 1.

O. CHRISTIANSON.

PULVERIZER.

APPLICATION FILED JAN. 29, 1912.

Patented Aug. 12, 1913.

oseAn onnrsrranson, or onxcaeo, rumors.

-PULVERIZER.

Specification of Letters Patent.

Patented Aug. 12, 1913.

Application filed January 29, 1912. Serial No. 674,086.

To all whom it may concern:

Be it known that I, OSCAR CHRIs'rIANsoN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Pulverizers, of v'hichthe following is a specification.

My invention relates to pulverizers of the type employing gangs of disksand the objects of the invention are to provide a construction whereinthe front gangs of the machine-may be adjusted toward or from each otherto adapt the pulverizer for such difl'erent kinds of work as ordinarypulverizing and filling in corn-rows; to vary the width of the machineas a whole; to make it possible to adjust the outer disks of a gang towork outside of the frame so that the S011 may be pulverized where anordinary pulverizer-frame would have no room to turn; to make itpossible to reverse the throw of the disks, or their concavity, withoutdisturbing the, mountings of the individual disks; and to provideeflicient disk-scraping means for this removable and reversible type ofdisk-gang.

Another object of the invention is to lighten the labor of turning thegangs b means of the hand-levers, by swinging eac gang on a pivot placedbetween the ends instead of at the one end of the gang, and to providesuch a construction and combination of parts as will simplify themachine as a whole adapted for the several kinds of operations to beperformed by the present invention.

The invention therefore consists in the novel construction, combinationand arrangement of parts, hereinafter described in detail, illustratedin the accompanying drawings and incorporated in the appended claims.

In the drawings Figure 1 is a plan view of 'a pulverizer embodying myinvention. Fig. 2 is a section taken substantially on line XX of Fig. 1.Fig. 3 is an enlarged view of one of the gangs, parts being broken away,seen substantially from the section line YY on Fig. 1. Fig. 4 is asection taken substantially on line Y 2 on Fig. 3. Fig. 5 is an enlargeddetail view, partly broken away and in section, of the rod on which thescrapers are mounted and the mechanism for actuating said rod. Fig. 6 isa section takenon line 6-6 ofFig. 5. Fig. 7 is a perspective view of oneof the four bearing-members. Fig. 8 is a. perspective view of theking-bolt plate and klng-bolt on which each gang of disks turns. Fig. 9is a perspective view of the elbow-lever attached to one of thescraper-rods partly broken away. I

In the several views 2 represents the frame of the machine. This frameconsists of a pair of angle-irons each of which is bent twice at rightangles to form front portions 3 and 4 and rearwardly extending parallelportions 5, 6, 7, and 8. The latter are extended by inwardly inclinedportions 9, 10, 11, and 12 which form the rear portion of the frame. Theangle irons are bound together by two pairs of flat bars 13 and 14 and15 and 16 which are secured to the angle-irons in any suitable manner.Between each of these two pairs of fiat bars, at any desired placesalong their lengths, forward bearings 16" and 17 and rear bearings 18and 19 are clamped by bolts 20 and 21, as shown in Figs. 2, 3, and 4.The machine is equipped with four gangs of dished disks 22 of ordinaryform, which are mounted upon shafts and equip ed with bearings whichform no part of t e present invention. The shafts and the gangs of disksare designated by the numbers 23, 24, 25, and 26.

In 3 one of the gangs is shown on an enlarged scale. Each gang isconnected, as shown in Fig. 3, with the frame of the machine by an arch27 formed from a bar of iron or steel bent twice at right angles to forma pair of vertical legs and a horizontal leg upon which the frame rests.The vertical legs are bolted at 28 and '29 to suitable bearing portionson the shaft and on the horizontal partof the arch is bolted a plate 30,a perspective view of which is shown in Fig. 8. This plate has aperturedears 31 and 32 for the bolts which secure it to the arch. From the Plate30 rises a kingbolt 33 which engages a hole therefor in thebearing-member, one of the latter, 16', being shown in Fig. 7. Inopposite sides of the bearing-member 16', as well as in the 7 otherthree identical members 17, 18 and 19, are horizontal grooves 34 and 35which are engaged by the bolts 20 and 21. These bearing-members may beclamped at different places between the pair of bars 13 and 14 and thepair 15 and 16.

In Fig. 1 the disks of the forward gangs have their concave sides facinginwardly,

- verizing the same ground with the forward while the rear gang disksface the opposite way. These facings may be'reversed by disengaging thegangs from the frame and shifting each gang, or a portion thereof, suchas only the forward gangs, to the opposite side. This may be effected bySlIIlply removing the nut from the king-bolt 33 and one other bolt tobe'referred to, and lifting the frame off the gang. In Fig. 1 the gangsare set to level out corn ridges, the rear gangs straddling one ridgeand throwing the earth into the ditch or depression on each side of thisridge, while the forward gangs are set to throw in one-half of each ofthe adjacent ridges into-the same depressions. The adjustability of thebearing blocks or members 16, 17, 18 and 19 between the flat barspermits the adjustment of the machine to variously spaced apart rows orridges, and when the forward gangs are set in their innermost positionsthe outer ends of the rear gangs will work be separated to place theinnermost disk of each outside of the path of the outermost disk of eachrear gang. The adjustment of the forward bearings for the frontgangsalso permits double-disking ground, or puldisks first and then withthe rear disks.

The method of fastening the bearings between the pairs of fiat bars maybe varied in numerous ways, the essential feature being the lateraladjustability. When the forward gangs are placed their maximum distanceapart the outer disks thereon will operate beyond the sides of theframe, which removes the frame as an obstruction over these disks,enables. the operator to work every inch of ground up to a hedge, fenceor building. Cutting away the usual rear corners of the frame byslanting its sides inwardly facilitates the operation of the machine inplaces where there is but smallroom for turning, the room required bythis construction being substantially all that would be required for thefront/gangs alone. Each frame 27 and its gang of disks is given supportin addition to that provided by the king-bolt, through pull and pushrods 38 and 39, the rear ends of which are pivoted at 40 and 41 tosuitable lugs on the shaftbearings, such as at 42 and 43. The forwardends of these rods are pivoted at 40 and 41 to a bar 44. This bar ispivoted at its middle at 45 and 46, respectively, for the front gangsand at 47 and 48 for the rear gangs. The gangs of disks are swung ontheir pivots 33 by means of a air of levers 49 and. 50, the formeroperating the front and rear gang at the left and the latter the gangsat the right. Each lever is fulcrumed upon a quadrant casting 51 securedto the parts 6 and 7, respectively. The lower end of each of theselevers is bent upon itself to form a short lever 52 as shown clearly inFig. 1. The latter and the body portion of the lever are fulcrumed on abolt 53 which passes through the quadrant casting. In the upper end ofthe lever portion 52 is a hole which is engaged by. a bolt 54 which alsoengages an eye 54' of a connecting rod 55 the rear end of which isattached at- 56 to a suitable lug on the rear shaft-bearing. At thelower end, or bend, of the lever is a bolt or pin 57 to which theforward end of alrod 58 is attached, this rod connecting the lever withthe inner end of the forward gang. Like the rod 55 the rear end of therod 5-8 is attached at 58 to the inner end of the front disk shaftbl'a'aring. When the inner end of the forward gang and the outer end ofthe rear gang are to be moved in the same direction by each movement ofthe lever the forward end of the rod 55 is removed from the bolt 54: andattached also to the bolt or pin 57, as indicated by dotted 'line Z inFig. 1. When arranged as in Fig.

2, however, the adjacent ends of the gangs at each side are swung inopposite directions at each movement of the lever. In each instance thepull or push of one of the connecting rods upon one end of a gang istransmitted to the opposite end. of the.

gang through the equalizing rod 38, 39 and 441, the rearward push on therod 58, for instance, being transmitted to the opposite end of the gangby a pulling force through the rod 39. I v

A drivers seat 59 is mounted over the rear portion of the frame on apair of springsupports 66 and 61 secured at 62 and 63 to the bar 13 andat 64 and 65 to the bar 15.

66, 67, 68 and 69 represent several of a series-of holes into whichthepivots 45 and 46 may be inserted to accommodate the equalizing rods tothe adjustments of the king-bolt bearings immediately overthedisk-shafts. The draft-rigging may be attached in any suitable manner tothe forward portions 3 and 4 of the frame, and for this purposeunoccupied holes. 66 to 69 may be used to attach clevices to.

Referring, now, to the cleaning devices for the disks, these aredesigned to form a part of each gang of disks and to follow said angswhen they are exchanged or shifted.

Ilach gang is therefore provided. with a set of scrapers and afoot-pedal for operating same. 1 .he entire set of scrapers or shovelsare rigidly secured to a bar and this bar is yieldingly mounted, toobviate the disadvantage of the looseness and inoperativeness ofindividual scrapers yieldingly mounted separately. The scrapers are ofthe type working end-wise like shovels and are swung by a foot-leverfrom the hubs of the' disks toward the peripheries. A scraper 70 isprovided for each disk, this scraper being mounted on the concave sideof the disk. These scrapers are rigidly secured to a rod 71 or flat barwhich is mounted for a partial turning movement as well as for end-wisemovement. The fiat bar is mounted in a triangular opening 72 in each oftwo castings 73 and 74 secured to, or forming a part of, the uprightlegs of the frame 27 as shown in Fig. 3. The castings 73 and 74 have camsurfaces on which castings or cams 75 and 76 operate. The formerare-fixed on the frame and the latter are rotated by the rod carryingthe scrapers. The operation of the cams moves the rod carrying thescrapers endwise whereby the scrapers in swinging from their normalpositions at the hubs of the disks are also mounted laterally to adaptthemselves to the curvature of the disk radially from center tocircumference. The cams 75 and 76 are held against movement away fromeach other on the rod 71 by meansof stop-pins 77 and 78 which passthrough the rod or fiat bar 71. The castmgs 73, 7 4, 75, and 76 arehollow which provides interior spaces 79 and 80 in which are placedcoiled springs 81 and 82 which normally hold the cam-portions. togetherand return them and the rod to normal position when thefoot-lever isreleased by the operator after each operation of scraping the disksclean of earth or clay. One end of the coiled spring 81 is secured tothe casting '7 5 and the other end is secured to the casting 73. Thespring 82 is similarly fastened at its respective ends to thecam-portions 74 and'76. A side view of the cams showing their exteriorand the cam surfaces is shown in Fig. 3, and an enlarged section showingthe interior of the cams is shown in Fig. 5.

In Fig. 5 83 represents one of the meeting lines between the stationaryand the revoluble halves of the cam sections 75 and 73. 84 is anelbow-shaped foot-lever by means of which the operator turns the rod 71.This lever is in each instance fastened by a bolt 85 to the rod 71 andthe opposite end of the rod or bar 71 is provided with a hole 86 withwhich the foot-lever bolt may be engaged when the lever is shifted aswhen the gangs are caused to exchange positions to change the facings ofthe disks without disturbing the latter ip the shafts on which they aremounted.

The pivoting of each gang intermediate of its ends will very materiallyreduce the strain upon the operating-levers, as only about half of thedisks are forced through the earth in the direction of travel, and thedisks which swing toward the rear of the pivot of the gang while themachine is operating in the earth will very largely offset thelever-resistance offered by the disks that must be swung forwardly.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination in a pulverizer, of a pair offorward gangs of disks, a pair of reargangs, said rear gangs extendingacross a narrower path than said forward gangs, and a frame for saidgangs which has a contracted rear portion.

2. The combination with a frame, of a pair of forward gangs of disks, apair of rear gangs, swinging support-s connecting said gangs with saidframe, a pivoted connecting rod for each end of each gang, a pivoted barfor each gang to which the connecting rods for the gang arepivoted,means for swinging a forward and a rear gang simultaneouslyeither in the same or in opposite directions, and means for varying thepulverizing width of the machine as a whole.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JULIA M. BRISTOL, J. W. BECKS'I'ROM.

